The phrase points to 2ch, a long running Japanese anonymous textboard where threads can turn strange very quickly, which became shorthand online for risky browsing. Clips warning people away from it circulate as a joke format on soundboards and in edited videos, often paired with the caption starfish mode. Instead of explaining a specific post, the sound works as a universal label for content that feels cursed, confusing, or too much, and its brevity keeps it in rotation for reaction edits.